from
http://www.debttraders.com/bond_investing.cfm
Government bond
Bonds can be issued by a government or government agency. Government bonds are often referred to as sovereign bonds, examples of which are the Kingdom of Thailand bonds, Malaysia bonds and U.S. Government bonds (also known as Treasuries as they are issued by the U.S. Treasury). Within the sovereign category are quasi-sovereign bonds, which are securities issued by entities supported by the sovereign. An example of a quasi-sovereign bond issuer is Petroliam Nasional Berhad, the government owned national oil and gas company of Malaysia.